A. to produce torque
B. for speed reduction
C. to obtain variable speeds
D. to increase efficiency of system
E. to damp out vibrations
Related Mcqs:
- The property of a material which enables it to resist fracture due to high impact loads is known as__________________?
A. elasticity
B. endurance
C. strength
D. toughness
E. resilience - If a material fails below its yield point, failure would be due to___________________?
A. straining
B. fatigue
C. creep
D. sudden loading
E. impact loading - Tensile strength of a mild steel specimen can be roughly predicted from following hardness test_________________?
A. Brinell
B. Rockwell
C. Vicker
D. Shore’s sceleroscope
E. none of the above - Yield point in fatigue loading as compared to static loading is__________________?
A. same
B. higher
C. lower
D. depends on other factors
E. none of the above - A stud________________________?
A. has a head on one end and a nut fitted to the other
B. has head at one end and other end fits into a tapped hole in the other part to be joined
C. has both the ends threaded
D. has pointed threads
E. requires locking nuts - Transverse fillet welded joints are designed for________________?
A. tensile strength
B. compressive strength
C. shear strength
D. bending strength
E. torsional strength - The strap end of a connecting rod of steam engine is joined by_________________?
A. gib of cotter joint
B. sleeve and cotter joint
C. spigot socket cotter joint
D. knuckle joint
E. universal coupling - I.S. specifies following total number of grades of tolerances__________________?
A. 18
B. 16
C. 20
D. 22
E. 14 - The rated life of a bearing varies___________________?
A. directly as load
B. inversely as square of load
C. inversely as cube of load
D. inversely as fourth power of load
E. none of the above - Elastic nut is a locking device in which__________________?
A. one small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
B. a slot is cut partly in middle of nut and then slot reduced by tightening a screw
C. hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip
D. through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at other end
E. none of the above
